BK Precision DAS30, Руководство пользователя

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12
DAS60 DAS50
Item Description
1 DC Power
2 PT100-PT1000 (optional)
3 Power Switch
4 USB Ports
5 Ethernet Port
6 Logic Signal Connector
7 Analog Inputs
8 Grounding Terminal
DAS30
Figure 2.1 Recorder Connections
2.3.1 Analog Inputs
Isolated inputs have 2 shielded banana jack type terminals for each input:
Red Positive Input
Black Negative Input
The inputs are capable of measuring
±
500 VDC or 440 VAC.
For best results and to eliminate noise, twisting or shielding the leads is recommended. If the source of the signal you
have to record has low internal impedance, use twisted wires. For high impedance signal sources, using shielded wires
is recommended.
When gathering grounds from the various items on the measurement line, it is good to check that there is no voltage
difference between them, in order to prevent any shortcut. If any doubt, make a measurement with a voltmeter on a
low resistance (i.e. 1k
Ω
) between the terminals.
2.4 Ground the Recorder
For safety, the unit should be connected to Earth ground. The recorder includes a terminal for this purpose located on
the top surface of the DAS60 and on the right-hand side of the DAS30 and DAS50.
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